| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package com.iver.cit.gvsig.fmap.core;

import java.awt.geom.AffineTransform;

import java.awt.geom.Arc2D;

import java.awt.geom.Point2D;

import com.iver.cit.gvsig.fmap.edition.cad.TrigonometricalFunctions;

/**

 * Clase que crea las geometr?as, contendra un m?todo create por cada tipo de

 * geometria que soporte gvSIG

 */

public class ShapeFactory {

        /**

         * Crea una geometr?a que contiene como shape un punto 2D.

         *

         * @param x Coordenada x.

         * @param y Coordenada y.

         *

         * @return Geometr?a.

         */

        public static IGeometry createPoint2D(double x, double y) {

                return new FGeometry(new FPoint2D(x, y));

        }

        /**

         * Crea una geometr?a que contiene como shape un Multipunto 2D.

         *

         * @param x Coordenada x.

         * @param y Coordenada y.

         *

         * @return Geometr?a.

         */

        public static IGeometry createMultipoint2D(double[] x, double[] y) {

                return new FMultiPoint2D(x, y);

        }

        /**

         * Crea una geometr?a que contiene como shape un punto 3D.

         *

         * @param x Coordenada x.

         * @param y Coordenada y.

         * @param z Coordenada z.

         *

         * @return Geometr?a.

         */

        public static IGeometry createPoint3D(double x, double y, double z) {

                return new FGeometry(new FPoint3D(x, y, z));

        }

        /**

         * Crea una geometr?a que contiene como shape un Multipunto 3D.

         *

         * @param x Coordenada x.

         * @param y Coordenada y.

         * @param z Coordenada z.

         *

         * @return Geometr?a.

         */

        public static IGeometry createMultipoint3D(double[] x, double[] y,

                double[] z) {

                return new FMultipoint3D(x, y, z);

        }

        /**

         * Crea una geometr?a que contiene como shape un Polil?nea 2D.

         *

         * @param shape GeneralPathX.

         *

         * @return Geometr?a.

         */

        public static IGeometry createPolyline2D(GeneralPathX shape) {

                return new FGeometry(new FPolyline2D(shape));

        }

        /**

         * Crea una geometr?a que contiene como shape un Polil?nea 3D.

         *

         * @param shape GeneralPathX.

         * @param pZ Vector de Z.

         *

         * @return Geometr?a.

         */

        public static IGeometry createPolyline3D(GeneralPathX shape, double[] pZ) {

                return new FGeometry(new FPolyline3D(shape, pZ));

        }

        /**

         * Crea una geometr?a que contiene como shape un Pol?gono 2D.

         *

         * @param shape GeneralPathX.

         *

         * @return Geometr?a.

         */

        public static IGeometry createPolygon2D(GeneralPathX shape) {

                return new FGeometry(new FPolygon2D(shape));

        }

        public static IGeometry createCircle(Point2D center, Point2D r){

                double radio = center.distance(r);

                return createCircle(center, radio);

        }

        public static IGeometry createCircle(Point2D center, double radio){

                Arc2D.Double arc = new Arc2D.Double(center.getX()-radio, center.getY() - radio,

                                2 * radio, 2 * radio, 0, 360, Arc2D.OPEN);

                return new FGeometry(new FCircle2D(new GeneralPathX(arc)));

        }

        public static IGeometry createEllipse(Point2D axis1Start, Point2D axis1End, double axis2Length){

                double xAxis = axis1Start.distance(axis1End);

                Arc2D.Double arc = new Arc2D.Double(axis1Start.getX(),

                                axis1Start.getY() - axis2Length, xAxis, 2 * axis2Length, 0, 360, Arc2D.OPEN);

                Point2D rotationPoint = new Point2D.Double(axis1Start.getX() + xAxis /2, axis1Start.getY());

//                double angle = Math.atan2(axis1End.getX() - axis1Start.getX(),

//                                axis1End.getY() - axis1Start.getY());

                double angle = TrigonometricalFunctions.getAngle(axis1Start, axis1End);

//                double distortedAngle = Math.atan2(Math.sin(angle) * xAxis, Math.cos(angle) * 2 * axis2Length);

                AffineTransform mT = AffineTransform.getRotateInstance(angle, axis1Start.getX(), axis1Start.getY());

                GeneralPathX gp = new GeneralPathX(arc);

                gp.transform(mT);

                return new FGeometry(new FEllipse2D(new GeneralPathX(gp),axis1Start,axis1End,axis2Length));

        }

        public static IGeometry createArc(Point2D p1, Point2D p2, Point2D p3){

                Arc2D arco = TrigonometricalFunctions.createArc(p1, p2, p3);

                if (arco == null) return null;

                FArc2D arc=new FArc2D(new GeneralPathX(arco),p1,p2,p3);

                return new FGeometry(arc);

        }

        /**

         * Crea a partir de un FShape una geometr?a.

         *

         * @param shp FShape.

         *

         * @return Geometr?a.

         */

        public static FGeometry createGeometry(FShape shp) {

                return new FGeometry(shp);

        }

}